B. Mandelbrot is probably one of the most well known mathematicians of the second half of the 20th century. As a scientist he was interested in the "strange" fractal geometry. In this TED talk he draws our attention to the naturally occurring complexity we observe everyday, but which is left unnoticed by our eyes. In this talk he briefly and in very simple terms explains the basic concepts of fractal geometry. We invite you to listen to this great man speak.